diff --git a/firmware/controllers/math/engine_math.cpp b/firmware/controllers/math/engine_math.cpp
index d41447323b..98b0eb32a5 100644
--- a/firmware/controllers/math/engine_math.cpp
+++ b/firmware/controllers/math/engine_math.cpp
@@ -56,11 +56,11 @@ float getIgnitionLoad() {
  */
 void setSingleCoilDwell() {
 	for (int i = 0; i < DWELL_CURVE_SIZE; i++) {
-		engineConfiguration->sparkDwellRpmBins[i] = i + 1;
+		engineConfiguration->sparkDwellRpmBins[i] = (i + 1) * 50;
 		engineConfiguration->sparkDwellValues[i] = 4;
 	}
 
-	engineConfiguration->sparkDwellRpmBins[5] = 10;
+	engineConfiguration->sparkDwellRpmBins[5] = 500;
 	engineConfiguration->sparkDwellValues[5] = 4;
 
 	engineConfiguration->sparkDwellRpmBins[6] = 4500;
diff --git a/firmware/controllers/settings.cpp b/firmware/controllers/settings.cpp
index 0f510e348e..a6e3571298 100644
--- a/firmware/controllers/settings.cpp
+++ b/firmware/controllers/settings.cpp
@@ -895,7 +895,7 @@ const plain_get_integer_s getI_plain[] = {
 //		{"timing_mode", setTimingMode},
 //		{"engine_type", setEngineType},
 		{"warning_period", (int*)&engineConfiguration->warningPeriod},
-		{"hard_limit", &engineConfiguration->rpmHardLimit},
+//		{"hard_limit", &engineConfiguration->rpmHardLimit},
 //		{"firing_order", setFiringOrder},
 //		{"injection_pin_mode", setInjectionPinMode},
 //		{"ignition_pin_mode", setIgnitionPinMode},
diff --git a/unit_tests/tests/ignition_injection/test_multispark.cpp b/unit_tests/tests/ignition_injection/test_multispark.cpp
index 9b8bb2a7ac..5125556d87 100644
--- a/unit_tests/tests/ignition_injection/test_multispark.cpp
+++ b/unit_tests/tests/ignition_injection/test_multispark.cpp
@@ -42,7 +42,7 @@ TEST(Multispark, EnabledNoMaxRpm) {
 	multisparkCfg();
 
 	// Practically no RPM limit
-	engineConfiguration->multisparkMaxRpm = 65000;
+	engineConfiguration->multisparkMaxRpm = 12500;
 
 	EXPECT_EQ(0,  getMultiSparkCount(0    ));
 	EXPECT_EQ(10, getMultiSparkCount(150  ));